Configure a CS2 / CS:Source server (RCON, password, tickrate)

A CS2 or CS:Source server is configured via server.cfg (passwords, RCON, game rules) and the startup parameters (tickrate, port). CS2 also introduces sub-tick, which changes the gameplay picture.

Cause / The problem

Without RCON, you cannot administer the server remotely. Without sv_password, anyone can join. And the default tickrate (64) is too low for competitive use: shots register with delay.

Solution

1. Edit server.cfg in game/csgo/cfg/server.cfg (CS2) or cstrike/cfg/server.cfg (CS:S).
2. Server password (private access):

   sv_password "MyPrivateMatch"

   Leave empty for a public server.
3. RCON password:

   rcon_password "ASolidRcon123"

   Avoid using any other method: set it only here or via the panel’s Custom RCON password field. Do not put it in the command line.
4. Set the tickrate in the startup parameters (panel Variables):

   -tickrate 128

   In CS2, the sub-tick system records actions between ticks, but -tickrate 128 is still useful for movement and shooting precision. CS:S supports 66 or 100.
5. Rate-limit RCON to prevent brute-force attacks:

   sv_rcon_banpenalty 60
   sv_rcon_maxfailures 5
   sv_rcon_minfailuretime 30

6. Configure the basic rules:

   sv_cheats 0
   mp_freezetime 6
   sv_pure 1
   hostname "My FR Server — onesubnet"

7. Restart and test RCON from the client console: rcon_password ASolidRcon123 then rcon status.

In CS2, the classic RCON protocol still works but some third-party tools (CS2 Web RCON) replace it for remote administration. Change the RCON password if you share it with a staff member who leaves.